public final class UPCAReader extends UPCEANReader
Implements decoding of the UPC-A format.
| Constructor and Description | 
|---|
| UPCAReader() | 
| Modifier and Type | Method and Description | 
|---|---|
| Result | decode(BinaryBitmap image)Locates and decodes a barcode in some format within an image. | 
| Result | decode(BinaryBitmap image,
      Map<DecodeHintType,?> hints)Locates and decodes a barcode in some format within an image. | 
| protected int | decodeMiddle(BitArray row,
            int[] startRange,
            StringBuilder resultString)Subclasses override this to decode the portion of a barcode between the start
 and end guard patterns. | 
| Result | decodeRow(int rowNumber,
         BitArray row,
         int[] startGuardRange,
         Map<DecodeHintType,?> hints)Like  UPCEANReader.decodeRow(int, BitArray, Map), but
 allows caller to inform method about where the UPC/EAN start pattern is
 found. | 
| Result | decodeRow(int rowNumber,
         BitArray row,
         Map<DecodeHintType,?> hints)Attempts to decode a one-dimensional barcode format given a single row of
 an image. | 
patternMatchVariance, recordPattern, recordPatternInReverse, resetpublic Result decodeRow(int rowNumber, BitArray row, int[] startGuardRange, Map<DecodeHintType,?> hints) throws NotFoundException, FormatException, ChecksumException
UPCEANReaderLike UPCEANReader.decodeRow(int, BitArray, Map), but
 allows caller to inform method about where the UPC/EAN start pattern is
 found. This allows this to be computed once and reused across many implementations.
decodeRow in class UPCEANReaderrowNumber - row index into the imagerow - encoding of the row of the barcode imagestartGuardRange - start/end column where the opening start pattern was foundhints - optional hints that influence decodingResult encapsulating the result of decoding a barcode in the rowNotFoundException - if no potential barcode is foundFormatException - if a potential barcode is found but format is invalidChecksumException - if a potential barcode is found but does not pass its checksumpublic Result decodeRow(int rowNumber, BitArray row, Map<DecodeHintType,?> hints) throws NotFoundException, FormatException, ChecksumException
OneDReaderAttempts to decode a one-dimensional barcode format given a single row of an image.
decodeRow in class UPCEANReaderrowNumber - row number from top of the rowrow - the black/white pixel data of the rowhints - decode hintsResult containing encoded string and start/end of barcodeNotFoundException - if no potential barcode is foundFormatException - if a potential barcode is found but format is invalidChecksumException - if a potential barcode is found but does not pass its checksumpublic Result decode(BinaryBitmap image) throws NotFoundException, FormatException
Readerdecode in interface Readerdecode in class OneDReaderimage - image of barcode to decodeNotFoundException - if no potential barcode is foundFormatException - if a potential barcode is found but format is invalidpublic Result decode(BinaryBitmap image, Map<DecodeHintType,?> hints) throws NotFoundException, FormatException
Readerdecode in interface Readerdecode in class OneDReaderimage - image of barcode to decodehints - passed as a Map from DecodeHintType
 to arbitrary data. The
 meaning of the data depends upon the hint type. The implementation may or may not do
 anything with these hints.NotFoundException - if no potential barcode is foundFormatException - if a potential barcode is found but format is invalidprotected int decodeMiddle(BitArray row, int[] startRange, StringBuilder resultString) throws NotFoundException
UPCEANReaderdecodeMiddle in class UPCEANReaderrow - row of black/white values to searchstartRange - start/end offset of start guard patternresultString - StringBuilder to append decoded chars toNotFoundException - if decoding could not complete successfullyCopyright © 2007–2018. All rights reserved.